weight gain but not noticeable ?

[Nebis]

just pinned my 2nd ml of my 4th week today (test enanthate 350 mg/ml). went to the gym to workout and have gained 12lbs in those 4 weeks (no longer have to worry if the stuff is legit ha). The thing is i notice i have gained some noticeable muscle but not even close to 12 lbs. my girlfriend cant even really tell a difference but that could be because she sees me everyday because everyone else says i am getting bigger.

questions:
is this majority water weight?
is the 5th week where the muscle really starts to build?



second question that isnt titled:

so today i really felt the needle go into the muscle like it felt very very strange, i was worried i hit a nerve. Usually i have my girlfriend do it because its just easier but she wasnt around. Once i was in the muscle i went to aspirate it and i lost grip of the needle and it bounced up and down while still in my ass like a diving bored does after someone jumps off of it.. 12 hours later my glute is VERY sore. how worried should i be about this? is there anything i can do to relive irritation? (22 gauge 1.5 inch)

[Joco71]

1. Yes the majority is water.

2. Yes steady hand equals less pip. You bruised your muscle. It will fell better in a couple of days. Good luck

[lovbyts]

You must have found the magic bean.